Baker's mole
Introduction
Introduction to Baker Becker is also known as Becker pigmented edgy, pigmented hair epithelium. Irregular brown spots on the shoulders, chest or scapula of men aged 10 to 20 years old, mild hyperkeratosis of the epidermis and hypertrophy of the acanthus, irregular extension of the epidermis, damage to pigment hyperplasia, usually single The edges are clear and irregular, even or multiple, or can be fused into a mesh, the hair on which it appears later, the skin lesions generally have large black hair, sometimes no hair, the disease can be associated with the pilose muscle leiomyoma . basic knowledge The proportion of illness: 0.003% Susceptible people: good for men aged 10 to 20 Mode of infection: non-infectious Complications: leiomyomas of the skin
Cause
Becker's cause
Cause of the disease (30%):
The cause is still unknown.
Pathogenesis (30%):
The pathogenesis is still unclear.
Prevention
Baker's prevention
There is no effective preventive measure for this disease. Early detection and early diagnosis are the key to the prevention and treatment of this disease.
Complication
Becker complications Complications, leiomyomas of the skin
Can be associated with pilose muscle leiomyoma.
Symptom
Becker's Symptoms Common Symptoms Fine mesh to patchy... Pore hyperkeratosis
Occasionally on the side of the shoulder or chest of a male 10 to 20 years old, the lesion is a pigmented hyperplasia patch, usually single, with clear and irregular edges, even or multiple, or can be fused into a mesh, the hair appears on it Late, sometimes without hair, this disease can be associated with pilose muscle leiomyoma.
Examine
Baker's inspection
Epidermal hyperkeratosis and acanthosis hypertrophy, epidermal protrusion irregularly, basal cell layer pigmentation, hypertrophic patch, generally single, clear and irregular edges, occasional or multiple, or can be fused into a network Shape, skin lesions generally have large black hair, and sometimes no hair, this disease can be associated with pilose muscle leiomyoma. The laboratory examined the upper part of the dermis and observed melanocytes, and the hair structure was normal. If accompanied by leiomyomas, the smooth muscle fibers in the dermis are significantly increased, the muscle fiber bundles are thickened, and the arrangement is irregular.
Diagnosis
Baker's diagnosis and identification
1. Blue sputum: blue-gray or blue-black papules or small nodules. Pigment cells are located deep in the skin (lower or lower dermis) and can be malignant.
2, black sable: brown black or black, slightly higher than the plaque on the leather surface, often have hair, thicker than normal hair, skin lesions grow with age.
3, Becker: also known as pigmented hair epithelial sputum, more common in young men's shoulders, irregular chest spots on the chest or scapula, the skin lesions generally have thick black hair.
4, verrucous epidermis: linear, banded or patchy, yellow-brown or papillary bulge damage; growth in a certain period of time, generally stable after adulthood, often persisted, some cases may be associated with itching.
5, pigmented nevus
(1) Junction: Generally, the rice is large, the surface is smooth, and it is hairless, flat, and brown.
(2) Mixed : Appears like a junction, slightly higher than the leather surface.
(3) Intradermal fistula: A papillary papule that is several millimeters to several centimeters in size and is higher than the leather surface and may contain hair.
